CN2561963Y - Liquefied petroleum gas pump - Google Patents
Liquefied petroleum gas pump Download PDFInfo
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- CN2561963Y CN2561963Y CN 02274695 CN02274695U CN2561963Y CN 2561963 Y CN2561963 Y CN 2561963Y CN 02274695 CN02274695 CN 02274695 CN 02274695 U CN02274695 U CN 02274695U CN 2561963 Y CN2561963 Y CN 2561963Y
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Abstract
A liquefied petroleum gas pump is provided, which relates to a pump, in particular to a liquefied petroleum gas pump used for transporting liquefied petroleum gas or other evaporable liquid with similar nature and petroleum products. The pump comprises a pump shell body (1), the pump shell body (1) is arranged with a liquid inlet (2) and a liquid outlet (3), the pump shell body (1) is inwardly arranged with an inner sleeve (4) with a hole (4-1), the inner sleeve (4) is fixedly connected with the pump shell body (1), the inner sleeve (4) is inwardly arranged with a rotor (5) with a groove (5-2), the rotor (5) center is arranged with a shaft (6) fixedly connected with the rotor (5), the rotor (5) groove (5-2) is inwardly arranged with a sliding sheet (7), the sliding sheet (7) is glidingly connected with the rotor (5), the inner sleeve (4) is also inwardly arranged with a side plate (14), and the side plate (14) is glidingly connected with the rotor (5) lateral surface and the sliding sheet (7) lateral surface. The utility model is used for transporting the liquefied petroleum gas with the advantages of safety and high efficiency.
Description
Technical field: the utility model relates to a kind of pump, particularly a kind of liquefied petroleum gas pump that is used for transportation of liquefied petroleum gas or kin other volatile liquid and petroleum products.
Background technique: liquefied petroleum gas (LPG) needs higher pressure and just can implement when can liquified petroleum gas cylinder or tank switching, and present existing liquefied gas pump under high pressure all exists potential safety hazards such as blast, so develop a safety, the simple and high liquefied petroleum gas pump of efficient is the target that people are eager to realize.
Summary of the invention: the liquefied petroleum gas pump that provides a kind of can safely and effectively liquid gas be packed into liquified petroleum gas cylinder or tank switching to use is provided the purpose of this utility model, its objective is such realization: liquefied petroleum gas pump comprises pump case 1, on described pump case 1, be provided with liquid entering hole 2 and liquid outlet 3, in pump case 1, be provided with the interior cover 4 of 4-1 with holes, in cover 4 fixedly connected with pump case 1, in interior cover 4, be provided with the rotor 5 of trough of belt 5-2, the center of rotor 5 is provided with the axle 6 affixed with rotor 5, be provided with slide plate 7 in the groove 5-2 of rotor 5, slide plate 7 is slidingly connected with rotor 5, also be provided with side plate 14 in interior cover 4, side plate 14 is connected with the side of rotor 5 and the side slip of slide plate 7.Advantage of the present utility model is: liquefied petroleum gas (LPG) enters in the cavity 4-2 of interior cover 4 from the hole 4-1 of liquid entering hole 2 and interior cover 4; axle 6 drives rotor 5 high speed rotating; because the eccentric part of cover 4 in axle 6 is arranged on; the interior slide plate 7 of groove 5-2 that is arranged on rotor 5 can contact with the inwall of interior cover 4 and high speed rotating under action of centrifugal force; can drive the volumes of liquefied petroleum gas (LPG) in cavity 4-2 that overlap in 4 in entering simultaneously constantly changes; so the pressure of the liquid that screws out from liquid outlet 3 behind the high speed rotating is greater than the pressure of liquid when liquid entering hole 2 enters; the tank body of needs dress closely is connected the can work that can finish liquified petroleum gas cylinder with liquid outlet 3; have simple in structure; do not have and leak; noise is low; the efficient height; vibrate slight advantage; in addition; also be provided with safety valve 8 on the pump case 1; when the export pipeline system pressure exceeds the rated pressure that safety valve mixed up; safety valve can be opened automatically; liquid is circulated in pump; play the effect of protection pipeline security of system; pump can be run well and increase the service life, have safe and reliable; the advantage that life-span is long.
Description of drawings: Fig. 1 is a structural representation of the present utility model, Fig. 2 is the A-A sectional view of Fig. 1, Fig. 3 is the enlarged view of safety valve 8, Fig. 4 is the structural representation of interior cover 4, Fig. 5 is the structural representation of rotor 5, Fig. 6 is the right elevation of Fig. 5, and Fig. 7 is the side view of side plate 14, and Fig. 8 is the structural representation of slide plate 7.
Embodiment one: present embodiment comprises pump case 1, on described pump case 1, be provided with liquid entering hole 2 and liquid outlet 3, in pump case 1, be provided with the interior cover 4 of 4-1 with holes, in cover 4 fixedly connected with pump case 1, in interior cover 4, be provided with the rotor 5 of trough of belt 5-2, the center of rotor 5 is provided with the axle 6 affixed with rotor 5, be provided with slide plate 7 in the groove 5-2 of rotor 5, slide plate 7 is slidingly connected with rotor 5, in interior cover 4, also be provided with side plate 14, side plate 14 is connected with the side of rotor 5 and the side slip of slide plate 7, rotor 5 is concentric with axle 6, the eccentric part of cover 4 in axle 6 is arranged on, around two side shafts 6 of rotor 5, respectively be provided with one group of equalizing orifice 5-1, equalizing orifice 5-1 comprises vertical hole 5-11 and the transverse holes 5-12 that communicates with vertical hole 5-11, vertically the center of hole 5-11 be arranged on spools 6 concentric circles on, the interior end of groove 5-2, communicate on transverse holes 5-12 and the rotor 5, liquefied petroleum gas (LPG) enters in the cavity 4-2 of interior cover 4 from the hole 4-1 of liquid entering hole 2 and interior cover 4, axle 6 drives rotor 5 high speed rotating, because the eccentric part of cover 4 in axle 6 is arranged on, so being arranged on the interior slide plate 7 of the groove 5-2 of rotor 5 can contact with the inwall of interior cover 4 and high speed rotating under action of centrifugal force, can drive the liquefied petroleum gas (LPG) of overlapping in the 4 cavity 4-2 in entering simultaneously volume-variation constantly takes place, so the pressure of the liquid that screws out from liquid outlet 3 behind the high speed rotating is greater than the pressure of liquid when liquid entering hole 2 enters, equalizing orifice can the balance fluid pressure and rotor is normally moved.The ellipse that the longitudinal section of interior cover 4 is formed for the three-arc curve, interior cover 4 is provided with feed liquor porose area 4-6 and fluid porose area 4-3, form confined area 4-4 and confined area 4-5 between feed liquor porose area 4-6 and the fluid porose area 4-3, on side plate 14 axial bore 14-1 around be provided with circular groove 14-2, the edge of liquid entering hole 2 and liquid outlet 3 is connected with flange 9, by and tank body on flange between the can work that is tightly connected and can finishes liquified petroleum gas cylinder, between axle 6 and pump case 1, be provided with mechanical seal 10.Mechanical seal 10 can be avoided leaking of the interior liquefied petroleum gas (LPG) of the pump housing, axle 6 axially on be provided with the end cap 11 affixed with pump case 1, one end of end cap 11 is connected with blank cap 12, the other end of end cap 11 has been connected with port lid 13, blank cap 12 is arranged on the termination of an end of axle 6 as the pump housing, there is port lid 13 to be arranged on axle 6 ends that link to each other with motor, hole on the port lid 13 arranged as the hole of passing of axle 6.Described pump case 1 is provided with safety valve 8; safety valve 8 comprises valve gap 8-1; spring 8-2; adjust plug 8-3; gland 8-4; adjust screw 8-5; be provided with valve seam 1-2 with the pump case 1 of safety valve 8 connections; the transverse section of valve seam 1-2 is two circles of different-diameter; the end that valve gap 8-1 is installed in valve seam 1-2 place and valve gap 8-1 communicates with the inner chamber of pump case 1; the other end of valve gap 8-1 is provided with adjusts plug 8-3; between valve gap 8-1 and adjustment plug 8-3, be provided with spring 8-2; adjust plug 8-3 and be connected in order to the adjustment screw 8-5 that regulates pump case 1 internal pressure; adjusting screw 8-5 is threaded with gland 8-4; gland 8-4 and pump case 1 Joint; be provided with circular groove 1-3 with the inwall of the pump case 1 of gland 8-4 fixing position; pressure acts on the end face of valve gap 8-1; by spring 8-2 masterpiece is used for adjusting plug 8-3; adjustment plug 8-3 under pressure outwards extruding adjusts screw 8-5; when the pressure in the cavity 4-2 reach a certain height; spring 8-2 is compressed; after valve seam 1-2 on valve gap 8-1 and the pump case 1 breaks away from; liquid outlet 3 inner high voltage flow of liquid are returned liquid entering hole 2 pressure releases; thereby the safety relief in the realization pump cavity; played the effect of protection pipeline security of system; in addition; the pressure bearing value can be regulated by adjusting screw 8-5; when screwing screw 8-5 clockwise; means for operation pressure of safety valve can increase progressively; in addition, distance h between the axis of the valve gap 8-4 interior edge face of safety valve 8 and liquid outlet 3
1=108mm, distance h between the axis of the axis of safety valve 8 and liquid entering hole 2
2=96mm, valve seam 1-2 goes up axis of small circle φ
1=30mm, valve seam 1-2 goes up axis of great circle φ
2=32mm, the diameter phi of the circular groove 1-2 on the pump case 1
3=44mm, the radius R of the three-arc of cover 4 in forming
1, R
2, R
3Be respectively 72mm, 84mm, 87mm, the hole 4-61 on the feed liquor porose area 4-6 of interior cover 4, the hole 4-31 on the fluid porose area 4-3 and the angle α between the 4-4 of confined area
1=22.5 °, hole 4-32 on the hole 4-52 on the feed liquor porose area 4-6, the fluid porose area 4-3 and the angle α between the 4-5 of confined area
2=42 °, place, the center diameter of a circle φ of vertical hole 5-11 of equalizing orifice 5-1
4=63mm, the vertically diameter phi of hole 5-11 and transverse holes 5-12
5=5mm, the vertically degree of depth h of hole 5-11
3=24mm, the end face distance h of the center of transverse holes 5-12 and rotor 5
4=19mm, the distance h at the lower end surface of groove 5-2 and axle 6 centers on the rotor 5
5=37.5mm, the thickness h of groove 5-2
6=6.1mm, the width h of rotor 5
6=75.85mm, the length h of slide plate 7
7=34mm, the width h of slide plate 7
8=5.45mm, the height h of slide plate 7
9=75.60mm, the interior circular diameter φ of circular groove 14-2 on the side plate 14
6=57mm ± 0.2mm, the outside diameter φ of circular groove 14-2
7=69mm ± 0.2mm, the degree of depth h of circular groove 14-2
10=0.8mm, interior cover curve is that three-arc curve and interior cover manhole appendix size positions are to guarantee the pump efficiency height, the basis that performance is good, the size of side plate circular groove, slide plate is balance pressure and makes that rotor normally moves, the assurance of reliability that the safety valve structure size on the pump housing is that the pump safe operation guarantees reliably.
Embodiment two: what present embodiment and embodiment one were different is distance h between the valve gap 8-4 of safety valve 8 and the axis of liquid outlet 3
1=158mm, distance h between the axis of the axis of safety valve 8 and liquid entering hole 2
2=113mm, valve seam 1-2 goes up axis of small circle φ
1=40mm, valve seam 1-2 goes up axis of great circle φ
2=60mm, the diameter phi of the circular groove 1-2 on the pump case 1
3=68mm, the radius R of the three-arc of cover 4 in forming
1, R
2, R
3Be respectively 82mm, 100mm, 108mm, interior cover 4 advance hole 4-21, the hole 4-31 on the fluid porose area 4-3 on the porose area 4-2 and the angle α between the 4-4 of confined area
1=18 °, advance hole 4-22, the hole 4-32 on the fluid porose area 4-3 on the porose area 4-2 and the angle α between the 4-5 of confined area
2=36 °, place, the center diameter of a circle φ of vertical hole 5-11 of equalizing orifice 5-1
4=68mm, the vertically diameter phi of hole 5-11 and transverse holes 5-12
5=6mm, the vertically degree of depth h of hole 5-11
3=20mm, the end face distance h of the center of transverse holes 5-12 and rotor 5
4=15mm, the distance h at the lower end surface of groove 5-2 and axle 6 centers on the rotor 5
5=42mm, the thickness h of groove 5-2
6=7mm, the width h of rotor 5
6=101.7mm, the length h of slide plate 7
7=39mm, the width h of slide plate 7
8=6.5mm, the height h of slide plate 7
9=101.6mm, the interior circular diameter φ of circular groove 14-2 on the side plate 14
6=60mm ± 0.2mm, the outside diameter φ of circular groove 14-2
7=76mm ± 0.2mm, the degree of depth h of circular groove 14-2
10=3.2mm.
Embodiment three: what present embodiment and embodiment one, two were different is distance h between the valve gap 8-4 of safety valve 8 and the axis of liquid outlet 3
1=108mm, distance h between the axis of the axis of safety valve 8 and liquid entering hole 2
2=96mm, valve seam 1-2 goes up axis of small circle φ
1=30mm, valve seam 1-2 goes up axis of great circle φ
2=32mm, the diameter phi of the circular groove 1-2 on the pump case 1
3=44mm, the radius R of the three-arc of cover 4 in forming
1, R
2, R
3Be respectively 100mm, 124mm, 134mm, interior cover 4 advance hole 4-21, the hole 4-31 on the fluid porose area 4-3 on the porose area 4-2 and the angle α between the 4-4 of confined area
1=22.5 °, advance hole 4-22, the hole 4-32 on the fluid porose area 4-3 on the porose area 4-2 and the angle α between the 4-5 of confined area
2=36 °, place, the center diameter of a circle φ of vertical hole 5-11 of equalizing orifice 5-1
4=73mm, the vertically diameter phi of hole 5-11 and transverse holes 5-12
5=8mm, the vertically degree of depth h of hole 5-11
3=28mm, the end face distance h of the center of transverse holes 5-12 and rotor 5
4=12mm, the distance h at the lower end surface of groove 5-2 and axle 6 centers on the rotor 5
5=45mm, the thickness h of groove 5-2
6=9mm, the width h of rotor 5
6=129.75mm, the length h of slide plate 7
7=54mm, the width h of slide plate 7
8=8.5mm, the height h of slide plate 7
9=129.5mm, the interior circular diameter φ of circular groove 14-2 on the side plate 14
6=65mm ± 0.2mm, the outside diameter φ of circular groove 14-2
7=87mm ± 0.2mm, the degree of depth h of circular groove 14-2
10=5mm.
Claims (10)
1, a kind of liquefied petroleum gas pump, its composition comprises pump case (1), it is characterized in that on described pump case (1), being provided with liquid entering hole (2) and liquid outlet (3), in pump case (1), be provided with the interior cover (4) of (4-1) with holes, interior cover (4) is fixedlyed connected with pump case (1), in interior cover (4), be provided with the rotor (5) of trough of belt (5-2), the center of rotor (5) is provided with and the affixed axle (6) of rotor (5), be provided with slide plate (7) in the groove (5-2) of rotor (5), slide plate (7) is slidingly connected with rotor (5), also be provided with side plate (14) in interior cover (4), side plate (14) is connected with the side of rotor (5) and the side slip of slide plate (7).
2, liquefied petroleum gas pump according to claim 1, it is characterized in that described pump case (1) is provided with safety valve (8), safety valve (8) comprises valve gap (8-1), spring (8-2), adjust plug (8-3), gland (8-4), adjust screw (8-5), be provided with valve seam (1-2) with the pump case (1) of safety valve (8) connection, the transverse section of valve seam (1-2) is two circles of different-diameter, valve gap (8-1) is installed in that valve seam (1-2) is located and an end of valve gap (8-1) communicates with the inner chamber of pump case (1), the other end of valve gap (8-1) is provided with adjusts plug (8-3), between valve gap (8-1) and adjustment plug (8-3), be provided with spring (8-2), adjust plug (8-3) and be connected in order to the adjustment screw (8-5) of regulating pump case (1) internal pressure, adjusting screw (8-5) is threaded with gland (8-4), gland (8-4) and pump case (1) Joint are provided with circular groove (1-3) with the inwall of the pump case (1) of gland (8-4) fixing position.
3, liquefied petroleum gas pump according to claim 1 and 2, it is characterized in that the ellipse of the longitudinal section of described interior cover (4) for three-arc curve composition, interior cover (4) is provided with feed liquor porose area (4-6) and fluid porose area (4-3), forms confined area (4-4) and confined area (4-5) between feed liquor porose area (4-6) and the fluid porose area (4-3).
4, liquefied petroleum gas pump according to claim 3, it is characterized in that described rotor (5) is concentric with axle (6), axle (6) is arranged on the eccentric part of interior cover (4), around two side shafts (6) of rotor (5), respectively be provided with one group of equalizing orifice (5-1), equalizing orifice (5-1) comprises vertical hole (5-11) and the transverse holes (5-12) that communicates with vertical hole (5-11), vertically the center in hole (5-11) be arranged on the concentric circle of axle (6) on, the interior end of groove (5-2), communicate on transverse holes (5-12) and the rotor (5).
5, liquefied petroleum gas pump according to claim 4 is characterized in that being provided with circular groove (14-2) around the last axial bore (14-1) of side plate (14).
6, liquefied petroleum gas pump according to claim 5 is characterized in that distance h between the axis of valve gap (8-4) interior edge face of described safety valve (8) and liquid outlet (3)
1=108mm, distance h between the axis of the axis of safety valve (8) and liquid entering hole (2)
2=96mm, valve seam (1-2) is gone up axis of small circle φ
1=30mm, valve seam (1-2) is gone up axis of great circle φ
2=32mm, the diameter phi of the circular groove (1-2) on the pump case (1)
3=44mm, the radius R of the three-arc of cover (4) in forming
1, R
2, R
3Be respectively 72mm, 84mm, 87mm, the hole (4-61) on the feed liquor porose area (4-6) of interior cover (4), the hole (4-31) on the fluid porose area (4-3) and the angle α between confined area (4-4)
1=22.5 °, the hole (4-62) on the feed liquor porose area (4-6), the hole (4-32) on the fluid porose area (4-3) and the angle α between confined area (4-5)
2=42 °, place, the center diameter of a circle φ in vertical hole (5-11) of equalizing orifice (5-1)
4=63mm, the vertically diameter phi of hole (5-11) and transverse holes (5-12)
5=5mm, the vertically degree of depth h of hole 5-11
3=24mm, the end face distance h of the center of transverse holes (5-12) and rotor (5)
4=19mm, rotor (5) go up the distance h at lower end surface with axle (6) center of groove (5-2)
5=37.5mm, the thickness h of groove (5-2)
6=6.1mm, the width h of rotor (5)
6=75.85mm, the length h of slide plate (7)
7=34mm, the width h of slide plate (7)
8=5.45mm, the height h of slide plate (7)
9=75.60mm, side plate (14) is gone up the interior circular diameter φ of circular groove (14-2)
6=57mm ± 0.2mm, the outside diameter φ of circular groove (14-2)
7=69mm ± 0.2mm, the degree of depth h of circular groove (14-2)
10=0.8mm.
7, liquefied petroleum gas pump according to claim 5 is characterized in that distance h between the axis of the valve gap (8-4) of described safety valve (8) and liquid outlet (3)
1=158mm, distance h between the axis of the axis of safety valve (8) and liquid entering hole (2)
2=113mm, valve seam (1-2) is gone up axis of small circle φ
1=40mm, valve seam (1-2) is gone up axis of great circle φ
2=60mm, the diameter phi of the circular groove (1-2) on the pump case (1)
3=68mm, the radius R of the three-arc of cover (4) in forming
1, R
2, R
3Be respectively 82mm, 100mm, 108mm, interior cover (4) advance hole (4-21), the hole (4-31) on the fluid porose area (4-3) and the angle α between confined area (4-4) on the porose area (4-2)
1=18 °, advance hole (4-22), the hole (4-32) on the fluid porose area (4-3) and the angle α between confined area (4-5) on the porose area (4-2)
2=36 °, place, the center diameter of a circle φ in vertical hole (5-11) of equalizing orifice (5-1)
4=68mm, the vertically diameter phi of hole (5-11) and transverse holes (5-12)
5=6mm, the vertically degree of depth h in hole (5-11)
3=20mm, the end face distance h of the center of transverse holes (5-12) and rotor (5)
4=15mm, rotor (5) go up the distance h at lower end surface with axle (6) center of groove (5-2)
5=42mm, the thickness h of groove (5-2)
6=7mm, the width h of rotor (5)
6=101.7mm, the length h of slide plate (7)
7=39mm, the width h of slide plate (7)
8=6.5mm, the height h of slide plate (7)
9=101.6mm, side plate (14) is gone up the interior circular diameter φ of circular groove (14-2)
6=60mm ± 0.2mm, the outside diameter φ of circular groove (14-2)
7=76mm ± 0.2mm, the degree of depth h of circular groove (14-2)
10=3.2mm.
8, liquefied petroleum gas pump according to claim 5 is characterized in that distance h between the axis of the valve gap (8-4) of described safety valve (8) and liquid outlet (3)
1=108mm, distance h between the axis of the axis of safety valve (8) and liquid entering hole (2)
2=96mm, valve seam (1-2) is gone up axis of small circle φ
1=30mm, valve seam (1-2) is gone up axis of great circle φ
2=32mm, the diameter phi of the circular groove (1-2) on the pump case (1)
3=44mm, the radius R of the three-arc of cover (4) in forming
1, R
2, R
3Be respectively 100mm, 124mm, 134mm, interior cover (4) advance hole (4-21), the hole (4-31) on the fluid porose area (4-3) and the angle α between confined area (4-4) on the porose area (4-2)
1=22.5 °, advance hole (4-22), the hole (4-32) on the fluid porose area (4-3) and the angle α between confined area (4-5) on the porose area (4-2)
2=36 °, place, the center diameter of a circle φ in vertical hole (5-11) of equalizing orifice (5-1)
4=73mm, the vertically diameter phi of hole (5-11) and transverse holes (5-12)
5=8mm, the vertically degree of depth h in hole (5-11)
3=28mm, the end face distance h of the center of transverse holes (5-12) and rotor (5)
4=12mm, rotor (5) go up the distance h at lower end surface with axle (6) center of groove (5-2)
5=45mm, the thickness h of groove (5-2)
6=9mm, the width h of rotor (5)
6=129.75mm, the length h of slide plate (7)
7=54mm, the width h of slide plate (7)
8=8.5mm, the height h of slide plate (7)
9=129.5mm, side plate (14) is gone up the interior circular diameter φ of circular groove (14-2)
6=65mm ± 0.2mm, the outside diameter φ of circular groove (14-2)
7=87mm ± 0.2mm, the degree of depth h of circular groove (14-2)
10=5mm.
9, liquefied petroleum gas pump according to claim 1 is characterized in that the edge of liquid entering hole (2) and liquid outlet (3) is connected with flange (9), is provided with mechanical seal (10) between axle (6) and pump case (1).
10, liquefied petroleum gas pump according to claim 1, it is characterized in that on the axle direction of axle (6), being provided with and the affixed end cap (11) of pump case (1), one end of end cap (11) is connected with blank cap (12), and the other end of end cap (11) has been connected with port lid (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274695 CN2561963Y (en) | 2002-08-10 | 2002-08-10 | Liquefied petroleum gas pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02274695 CN2561963Y (en) | 2002-08-10 | 2002-08-10 | Liquefied petroleum gas pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2561963Y true CN2561963Y (en) | 2003-07-23 |
Family
ID=33738910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02274695 Expired - Fee Related CN2561963Y (en) | 2002-08-10 | 2002-08-10 | Liquefied petroleum gas pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2561963Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176541A1 (en) * | 2014-05-17 | 2015-11-26 | 王映辉 | Shaft-in-shaft centering rotor pump provided with sliding plates |
| CN105351187A (en) * | 2015-11-10 | 2016-02-24 | 李楠 | Downhole oil extraction sliding block rotor pump device |
| CN109026655A (en) * | 2018-08-22 | 2018-12-18 | 江苏高越高新科技有限公司 | A kind of high-accuracy oil pump connector |
-
2002
- 2002-08-10 CN CN 02274695 patent/CN2561963Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176541A1 (en) * | 2014-05-17 | 2015-11-26 | 王映辉 | Shaft-in-shaft centering rotor pump provided with sliding plates |
| CN105351187A (en) * | 2015-11-10 | 2016-02-24 | 李楠 | Downhole oil extraction sliding block rotor pump device |
| CN109026655A (en) * | 2018-08-22 | 2018-12-18 | 江苏高越高新科技有限公司 | A kind of high-accuracy oil pump connector |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |